Oxygenation fishpond and use method thereof

Abstract

The invention discloses an oxygenation fishpond and a using method thereof. The oxygenation fishpond comprises a pond body, a filtering bin and a power bin. An overflow groove is formed in the tank body; the filtering bin is arranged on the power bin; a circulating water pump is arranged in the power bin; an inlet of the circulating water pump is communicated with the bottom of the tank body; an outlet of the filtering bin is communicated with the overflowing groove; an outlet of the overflowing groove is communicated with the tank body; an oxygenation device is arranged in the pool body; the oxygenation device comprises an oxygenation water pump; the oxygenation water pump is connected with an oxygenation head; the oxygenation head comprises an outer sleeve and a water-gas mixing head; an oxygenation water passing pipe is arranged in the water-gas mixing head; the oxygenation water passing pipe has a large inlet and a small outlet, and the middle pipe diameter is minimum; air inlet holes are formed in each group of oxygenation water passing pipes; the air inlet is connected with an air inlet pipe. The fish pond can increase the dissolved oxygen content of water in the fish pond, can well filter and absorb impurities in the pond, and is beneficial to improving the feeding density of aquatic animals and promoting the growth of cultured aquatic organisms.

Description

Technical Field

[0001] The invention belongs to the technical field of fish farming equipment, and in particular relates to an oxygenated fish pond and a use method thereof. Background Art

[0002] Oxygen is essential for biological respiration. Land organisms take in oxygen by breathing air directly, while aquatic organisms absorb oxygen in water to maintain respiration. The amount of oxygen in water determines whether aquatic organisms can survive and whether the surviving aquatic organisms can grow healthily. In the process of aquaculture, maintaining a certain amount of oxygen in the water is a major factor in ensuring the healthy survival and growth of aquatic organisms. The dissolved oxygen content in the water is affected by factors such as temperature and water quality, which will cause changes in the oxygen content of the water. The higher the density of fish in the fish pond, the greater the dissolved oxygen required, and different fish have different oxygen requirements. For example, fish such as mandarin fish require a higher oxygen content in the water. If the density of fish is high and the fish species have a high demand for oxygen, it is more likely to affect the growth of fish and even cause fish death. Sufficient oxygen content in the water can make fish active, stimulate eating, and increase growth rate. At the same time, the water quality in the fish pond is also the key to helping fish grow. Clean water quality can ensure the health of fish and promote growth. Reducing harmful substances such as ammonia nitrogen in the water can also help oxygen dissolve in water. Existing fish ponds do not have sufficient oxygenation capabilities and have limited water filtration, which can easily cause fish diseases, affect growth, and even cause fish death, making it impossible to raise fish at a higher density. Summary of the invention

[0003] The purpose of the present invention is to propose an oxygenated fish pond and its use method to solve the problems in the prior art such as low oxygen content, poor filtration function, high-density fish farming or highly aerobic fish farming that easily affect fish growth and even cause fish death. The patent of the present invention can increase the dissolved oxygen content of the water in the fish pond, provide good filtration, and remove debris in the pond in time, which is conducive to increasing the stocking density of aquatic animals and promoting the growth of aquatic organisms such as highly aerobic fish.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An aerated fish pond, comprising a pond body, a filter chamber and a power chamber; the power chamber and the pond body are arranged in parallel; a flow groove is arranged on the pond body; a plurality of the filter chambers are arranged on the power chamber; a circulating water pump is arranged in the power chamber; the inlet of the circulating water pump leads to the bottom of the pond body, and the outlet leads to the filter chamber; the outlet of the filter chamber leads to the flow groove; the outlet of the flow groove is connected to a clean water pipe leading to the pond body; an aeration device is arranged in the pond body; the aeration device comprises an aeration water pump; the aeration water pump is connected to an aeration head; the aeration head comprises an outer sleeve and a water-gas mixing head; at least one group of aeration water pipes is arranged in the water-gas mixing head; the inlet of the aeration water pipe is large, the outlet is small, and the pipe diameter in the middle is the smallest; an air inlet is arranged on the aeration water pipe; an air inlet pipe is arranged on the outer sleeve; the air inlet pipe passes through the outer sleeve and leads to the air inlet.

[0006] The circulating water pump draws out the water in the pool body, and after filtering through the filtering device in the filtering chamber, it passes into the flow channel, and finally the clean water flows back to the pool body; the aeration water pump can draw the water in the pool body into the aeration head, and mix the air drawn into the air inlet with the water flow through the water-gas mixing head, so that the air is rushed into the pool body with the water flow in the form of small bubbles, thereby increasing the oxygen content of the water in the pool body; since the inlet of the aeration water pipe is large and the outlet is small, according to the Bernoulli principle, at this time, the water flows from the pipe with a large diameter into the pipe with a small diameter, the flow rate increases, and the middle pipe diameter is the smallest, forming a Venturi tube, so that the small pipe diameter position in the middle simultaneously forms a negative pressure suction, so that the gas is drawn into the aeration water pipe from the air inlet, fully mixed with the water, and the oxygen content of the water body is increased; the air inlet pipe is used to pass air into the water-gas mixing head; there are several filtering chambers, and their outlets are converged through pipes and then passed into the flow channel.

[0007] As a further technical improvement, the two ends of the outer sleeve are respectively connected to connecting pipe I and connecting pipe II; the air inlet pipe is connected to an extension pipe that passes out of the pool body; the outlet end of the aeration water pipe is connected to an adapter head that matches the inner diameter of connecting pipe I. The air inlet pipe and the extension pipe pass air into the water-gas mixing head; the connecting pipe I is connected to the water-gas nozzle; the connecting pipe II is connected to the aeration water pump; the adapter head is used to match the outlet end of the aeration water pipe with the inner diameter of the connecting pipe I; and a rubber ring is provided on the adapter head.

[0008] As a further technical improvement, a biological filter is provided at the bottom of the filter chamber; a filter screen and biological filter filler are provided in the biological filter section; a clean water chamber and a sewage chamber are provided in parallel at the top of the filter chamber; a rotatable filter screen cylinder is provided in the clean water chamber. Nitrifying bacteria are provided in the biological filter section, which can decompose harmful substances in the water to ensure the cleanliness of the water body; a filter screen is provided at the entrance of the biological filter section, and an openable side door is provided in the biological filter section, which can be opened to replace the filter screen after shutdown; the filter chamber is also provided with an openable door for cleaning and maintenance.

[0009] As a further technical improvement, the outlet of the circulating water pump is connected to a filter water inlet pipe I leading to the biological filter unit; the biological filter unit is connected to a filter water inlet pipe II leading to the filter screen cylinder; one end of the filter screen cylinder extends into the sewage tank; the clean water tank is provided with a clean water outlet leading to the flow channel; the sewage tank is provided with a sewage pipe. After the water enters the biological filter unit, some harmful substances in the water are decomposed, and then the water enters the filter screen cylinder, which is provided with a filter screen. During the rotation process, the clean water is thrown out into the clean water tank and enters the flow channel from the clean water outlet; the debris in the water is retained in the filter screen cylinder, and part of it flows into the sewage tank with the water; the sewage in the sewage tank can be discharged through the sewage pipe.

[0010] As a further technical improvement, a backwash water pipe is provided in the clean water bin; a backwash water pump is connected to the bottom of the backwash water pipe; a controller is also provided on the outer wall of the sewage bin; a net drum motor is provided in the controller; a rotating frame is provided on the side of the filter net drum extending into the sewage bin; the rotating frame is connected to a rotating shaft; the rotating shaft is connected to the net drum motor. The backwash water pump draws clean water from the bottom of the clean water bin, and flushes the clean water to the outer surface of the filter net frame through the backwash water pipe, and the dirt and impurities stuck on the filter net frame are flushed out and enter the sewage bin with the water; the net drum motor drives the filter net drum to rotate through the rotating frame.

[0011] As a further technical improvement, a filter mesh is provided in the flow groove; the clean water pipe extends into the bottom of the pool body and then bends; a water outlet is provided on the clean water pipe; the water outlet faces the drain outlet of the pool body. The water quality is further filtered; the water flowing out of the water outlet blows impurities in the water toward the drain outlet.

[0012] As a further technical improvement, a lowest point is provided on one side of the bottom of the pool body, and the bottom of the pool body gradually tilts toward the lowest point to form a slope; a filter screen is provided at the lowest point of the bottom of the pool body; and a filter drainage pipe connected to the circulating water pump is connected below the filter screen. This design can make the bottom of the pool body tilt toward the lowest point, and the debris in the pool body is collected at the lowest point and pumped out by the circulating water pump through the filter drainage pipe.

[0013] As a further technical improvement, the tank body is also provided with an oil removal film filter tube; the top of the oil removal film filter tube is provided with a filter cap that can rise and fall with the liquid level in the tank; the bottom of the oil removal film filter tube leads to the power compartment and is connected to the inlet of the circulating water pump; a water pump grid is provided in the power compartment; the circulating water pump is arranged in the water pump grid; the aeration head is also connected with a water vapor nozzle. The filter cap can rise and fall with the liquid level in the tank body, so that the oil film and other impurities floating on the liquid surface in the tank body are sucked into the oil removal film filter tube, and finally enter the filter compartment through the circulating water pump; the opening position of the water vapor nozzle is flat, forming a surface-shaped water flow, and the impurity precipitation at the bottom of the tank body is flushed to the lowest point of the tank body.

[0014] The above-mentioned method of using the oxygenated fish pond:

[0015] Water filtration cycle: Due to the tilted bottom of the pool and the water flow from the clean water pipe, fish feces and food residues gather at the inlet of the filter and drainage pipe; the fish feces and food residue water is pumped out through the filter and drainage pipe, then enters the biological filtration part through the filter water inlet pipe, and then enters each filter chamber and sprays onto the filter cylinder; as the filter cylinder rotates, under the action of centrifugal force, the fish feces and food residues remain in the filter cylinder, while the clean water flows out through the filter cylinder, and finally gathers through the clean water outlet and enters the flow channel and flows back to the pool; part of the fish feces and food residues in the filter cylinder remain in the filter cylinder, and part is flushed into the sewage chamber and can be discharged from the sewage pipe;

[0016] Water oxygenation: The water in the pool is pumped out by the oxygenation water pump and then passed into the outer casing; at this time, the water flows through the oxygenation water pipe of the water-gas mixing head. Since the inlet of the oxygenation water pipe is large and the outlet is small, and the middle is the smallest, the water flow speed is rapidly accelerated and the internal pressure is reduced. The atmosphere presses the airflow into the air inlet pipe and into the oxygenation water pipe. The fast-flowing water mixes with the air, and the gas is sent out in the form of small bubbles, which are sprayed out through the water vapor nozzle to oxygenate the water body; at the same time, the water flows toward the inlet of the filter and drain pipe, blowing impurities in the water toward the filter and drain pipe.

[0017] The technical solution of the present invention has the following beneficial effects:

[0018] 1. The present invention can mix air and water through a water-gas mixing head and then inject them into the pool body, so that the oxygen content of the water in the pool body is increased, which is beneficial to the healthy growth of aquatic animals such as fish raised.

[0019] 2. The oxygenated water pipe of the present invention has a large end and a small end, and the diameter of the pipe in the middle is the smallest, so that the water flow speed is accelerated and suction is formed in the middle to suck air into the oxygenated water pipe, so that the air is continuously mixed with the water flow in the oxygenated water pipe, thereby achieving the purpose of increasing the oxygen content of the water body.

[0020] 3. The filter chamber of the present invention combines biological filtration and a rotating filter cylinder for filtration, so that the water quality in the pool is better, which is conducive to the healthy growth of aquatic animals such as fish.

[0021] 4. The bottom of the pool body of the present invention is inclined toward the lowest point, and the water flow blown out by the clean water pipe and the aeration water pump can bring food residues, fish feces and other sediments at the bottom of the pool to the lowest point, making it convenient for the filter drain pipe to absorb and discharge the sediments out of the pool body, thereby ensuring excellent water quality in the pool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0023] Figure 2 Schematic diagram of the explosion of the outer casing and the water-gas mixing head.

[0024] Figure 3 This is a schematic diagram of the internal structure of the clean water tank and the sewage tank.

[0025] Figure markings: 1-tank body, 2-filter chamber, 3-power chamber, 4-flow trough, 5-water pump grid, 6-circulating water pump, 7-filter screen, 8-filter water inlet pipe I, 9-clean water pipe, 10-oxygenation water pump, 11-extension pipe, 12-filter drainage pipe, 13-oil film filter pipe, 14-drain pipe, 15-filter screen cap, 16-water outlet, 17-filter screen, 18-controller, 19-outer casing, 20-water-gas mixing head, 21-connecting pipe I, 22-connecting pipe II, 23-inlet pipe, 24-oxygenation water pipe, 25-adapter head, 26-filter water inlet pipe II, 27-inlet hole, 28-water-gas nozzle, 29-biological filtration part, 30-clean water chamber, 31-sewage chamber, 32-clean water outlet, 33-filter screen cylinder, 34-rotating frame, 35-backwash water pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] like Figures 1 to 3As shown, an oxygenated fish pond comprises a pond body 1, a filter chamber 2 and a power chamber 3; the power chamber 3 is arranged in parallel with the pond body 1; a flow slot 4 is arranged on the pond body 1; a plurality of the filter chambers 2 are arranged on the power chamber 3; a circulating water pump 6 is arranged in the power chamber 3; the inlet of the circulating water pump 6 leads to the bottom of the pond body 1, and the outlet leads to the filter chamber 2; the outlet of the filter chamber 2 leads to the flow slot 4; the outlet of the flow slot 4 is connected to a clean water pipe 9 leading to the pond body 1; a An oxygenation device; the oxygenation device comprises an oxygenation water pump 10; the oxygenation water pump 10 is connected to an oxygenation head; the oxygenation head comprises an outer sleeve 19 and a water-gas mixing head 20; at least one group of oxygenation water pipes 24 is arranged in the water-gas mixing head 20; the oxygenation water pipes 24 have a large inlet and a small outlet, and the pipe diameter in the middle is the smallest; an air inlet hole 27 is arranged on the oxygenation water pipe 24; an air inlet pipe 23 is arranged on the outer sleeve 19; the air inlet pipe 23 passes through the outer sleeve 19 and is connected to the air inlet hole 27.

[0029] The two ends of the outer sleeve 19 are respectively connected to a connecting pipe I 21 and a connecting pipe II 22; the air inlet pipe 23 is connected to an extension pipe 11 passing out of the pool body 1; the outlet end of the oxygenation water pipe 24 is connected to an adapter 25 matching the inner diameter of the connecting pipe I 21.

[0030] A biological filter part 29 is provided at the bottom of the filter chamber 2; a filter screen and a biological filter filler are provided in the biological filter part 29; a clean water chamber 30 and a sewage chamber 31 are provided in parallel at the top of the filter chamber 2; a rotatable filter screen cylinder 33 is provided in the clean water chamber 30.

[0031] The outlet of the circulating water pump 6 is connected to a filter water inlet pipe Ⅰ8 leading to a biological filter part 29; the biological filter part 29 is connected to a filter water inlet pipe Ⅱ26 leading to a filter screen cylinder 33; one end of the filter screen cylinder 33 extends into a sewage tank 31; the clean water tank 30 is provided with a clean water outlet 32 ​​leading to a flow channel 4; the sewage tank 31 is provided with a sewage discharge pipe 14.

[0032] A backwash water pipe 35 is provided in the clean water bin 30; a backwash water pump is connected to the bottom of the backwash water pipe 35; a controller 18 is also provided on the outer wall of the sewage bin 31; a mesh drum motor is provided in the controller 18; a rotating frame 34 is provided on the side of the filter mesh drum 33 extending into the sewage bin 31; the rotating frame 34 is connected to a rotating shaft; and the rotating shaft is connected to the mesh drum motor.

[0033] A filter mesh 17 is provided in the flow channel 4 ; the clean water pipe 9 extends into the bottom of the pool body 1 and then bends; a water outlet 16 is provided on the clean water pipe 9 ; the water outlet 16 faces the drain port of the pool body 1 .

[0034] The method of use of the present invention is as follows:

[0035] Water filtration cycle: Due to the inclined pool bottom and the water flow from the clean water pipe 9 in the pool body 1, fish feces and food residues are gathered at the inlet of the filter drainage pipe 12; the fish feces and food residue water is extracted through the filter drainage pipe 12, then enters the biological filter part 29 through the filter water inlet pipe 8, and then enters each filter chamber 2 and is sprayed onto the filter screen cylinder 33; as the filter screen cylinder 33 rotates, under the action of centrifugal force, the fish feces and food residues remain in the filter screen cylinder 33, while the clean water flows out through the filter screen cylinder 33, and finally passes through the clean water outlet 32 ​​and then gathers and enters the flow channel 4, and flows back to the pool body 1; part of the fish feces and food residues in the filter screen cylinder 33 remain in the filter screen cylinder 33, and part is flushed into the sewage tank 31, and can be discharged from the sewage pipe 14;

[0036] Water oxygenation: The water in the pool body 1 is pumped by the oxygenation water pump 10 and then passed into the outer casing 19; at this time, the water flows through the oxygenation water pipe 24 of the water-gas mixing head 20. Since the inlet of the oxygenation water pipe 24 is large and the outlet is small, and the middle is the smallest, the water flow speed is rapidly accelerated and the internal pressure is reduced. The atmosphere presses the airflow into the air inlet pipe 23 and into the oxygenation water pipe 24. The fast-flowing water is mixed with the air, and the gas is entrained and sent out in the form of small bubbles, which are ejected through the water vapor nozzle 28 to oxygenate the water body; at the same time, the water flows toward the inlet of the filter and drain pipe 12, blowing impurities in the water toward the filter and drain pipe 12.

[0037] Embodiment 2:

[0038] The difference between this embodiment and the first embodiment is that: a lowest point is provided at one side of the bottom of the pool body 1, and the bottom of the pool body 1 gradually tilts toward the lowest point to form a slope; a filter screen 7 is provided at the lowest point of the bottom of the pool body 1; and a filter drainage pipe 12 leading to a circulating water pump 6 is connected below the filter screen 7.

[0039] The method of use of this embodiment is the same as that of the first embodiment.

[0040] Embodiment three:

[0041] The difference between this embodiment and the second embodiment is that: an oil removal film filter tube 13 is also provided in the pool body 1; the top of the oil removal film filter tube 13 is sleeved with a filter mesh cap 15 which can rise and fall with the liquid level in the pool; the bottom of the oil removal film filter tube 13 leads to the power compartment 3 and is connected to the inlet of the circulating water pump 6; a water pump grid 5 is provided in the power compartment 3; the circulating water pump 6 is arranged in the water pump grid 5; the aeration head is also connected to a water vapor nozzle 28.

[0042] The method of use of this embodiment is the same as that of the first embodiment.

[0043] Embodiment 4:

[0044] The difference between this embodiment and the third embodiment is that: the bottom of the pool body 1 is provided with a lowest point on one side, and the bottom of the pool body 1 gradually tilts toward the lowest point to form a slope; a filter screen 7 is provided at the lowest point of the bottom of the pool body 1; a filter drainage pipe 12 leading to the circulating water pump 6 is connected below the filter screen 7. An oil removal film filter tube 13 is also provided in the pool body 1; a filter cap 15 that can rise and fall with the liquid level in the pool is sleeved on the top of the oil removal film filter tube 13; the bottom of the oil removal film filter tube 13 leads to the power compartment 3 and is connected to the inlet of the circulating water pump 6; a water pump grid 5 is provided in the power compartment 3; the circulating water pump 6 is arranged in the water pump grid 5; and the aeration head is also connected to a water vapor nozzle 28.

[0045] The method of use of this embodiment is the same as that of the first embodiment.

[0046] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An oxygenated fish pond, characterized in that: The invention comprises a tank body (1), a filter chamber (2) and a power chamber (3); the power chamber (3) and the tank body (1) are arranged in parallel; a flow groove (4) is arranged on the tank body (1); a plurality of the filter chambers (2) are arranged on the power chamber (3); a circulating water pump (6) is arranged in the power chamber (3); the inlet of the circulating water pump (6) is connected to the bottom of the tank body (1), and the outlet is connected to the filter chamber (2); the outlet of the filter chamber (2) is connected to the flow groove (4); the outlet of the flow groove (4) is connected to a clean water pipe (9) connected to the tank body (1); An oxygenation device is provided in the pool body (1); the oxygenation device comprises an oxygenation water pump (10); the oxygenation water pump (10) is connected to an oxygenation head; the oxygenation head comprises an outer sleeve (19) and a water-gas mixing head (20); at least one group of oxygenation water pipes (24) is provided in the water-gas mixing head (20); the oxygenation water pipes (24) have a large inlet and a small outlet, and the diameter of the pipe in the middle is the smallest; the oxygenation water pipes (24) are provided with air inlet holes (27); the outer sleeve (19) is provided with an air inlet pipe (23); the air inlet pipe (23) passes through the outer sleeve (19) and is connected to the air inlet hole (27).

2. The oxygenated fish pond according to claim 1, characterized in that: The two ends of the outer sleeve (19) are respectively connected to a connecting pipe I (21) and a connecting pipe II (22); the air inlet pipe (23) is connected to an extension pipe (11) extending out of the pool body (1); and the outlet end of the oxygenation water pipe (24) is connected to an adapter (25) matching the inner diameter of the connecting pipe I (21).

3. The oxygenated fish pond according to claim 1, characterized in that: A biological filter section (29) is provided at the bottom of the filter chamber (2); a filter screen and biological filter filler are provided in the biological filter section (29); a clean water chamber (30) and a sewage chamber (31) are provided in parallel at the top of the filter chamber (2); a rotatable filter screen cylinder (33) is provided in the clean water chamber (30).

4. The oxygenated fish pond according to claim 3, characterized in that: The outlet of the circulating water pump (6) is connected to a filter water inlet pipe I (8) leading to a biological filter part (29); the biological filter part (29) is connected to a filter water inlet pipe II (26) leading to a filter screen cylinder (33); one end of the filter screen cylinder (33) extends into a sewage tank (31); the clean water tank (30) is provided with a clean water outlet (32) leading to a flow channel (4); and the sewage tank (31) is provided with a sewage discharge pipe (14).

5. The oxygenated fish pond according to claim 4, characterized in that: A backwashing water pipe (35) is provided in the clean water bin (30); a backwashing water pump is connected to the bottom of the backwashing water pipe (35); a controller (18) is also provided on the outer wall of the sewage bin (31); a net drum motor is provided in the controller (18); a rotating frame (34) is provided on the side of the filter net drum (33) extending into the sewage bin (31); the rotating frame (34) is connected to a rotating shaft; and the rotating shaft is connected to the net drum motor.

6. The oxygenated fish pond according to claim 1, characterized in that: A filter mesh (17) is provided in the flow channel (4); the clean water pipe (9) extends into the bottom of the pool body (1) and then bends; a water outlet (16) is provided on the clean water pipe (9); the water outlet (16) faces the drain port of the pool body (1).

7. The oxygenated fish pond according to claim 1, characterized in that: A lowest point is provided at one side of the bottom of the pool body (1), and the bottom of the pool body (1) gradually tilts toward the lowest point to form a slope; a filter screen (7) is provided at the lowest point of the bottom of the pool body (1); and a filter drainage pipe (12) leading to a circulating water pump (6) is connected below the filter screen (7).

8. The oxygenated fish pond according to claim 1, characterized in that: The tank body (1) is also provided with an oil removal film filter tube (13); the top of the oil removal film filter tube (13) is sleeved with a filter cap (15) that can rise and fall with the liquid level in the tank; the bottom of the oil removal film filter tube (13) leads to the power compartment (3) and is connected to the inlet of the circulating water pump (6); a water pump compartment (5) is provided in the power compartment (3); the circulating water pump (6) is arranged in the water pump compartment (5); and the aeration head is also connected to a water vapor nozzle (28).

9. The method for using an oxygenated fish pond according to any one of claims 1 to 8, characterized in that: The following steps are involved: 1) Water filtration cycle: Due to the inclined pool bottom and the water flow from the clean water pipe (9) in the pool body (1), fish feces and food residues are gathered at the inlet of the filter drainage pipe (12); the fish feces and food residue water is drawn out through the filter drainage pipe (12), then enters the biological filtration part (29) through the filter water inlet pipe (8), and then enters each filter chamber (2) and is sprayed onto the filter screen cylinder (33); as the filter screen cylinder (33) rotates, under the action of centrifugal force, the fish feces and food residues remain in the filter screen cylinder (33), while the clean water flows out through the filter screen cylinder (33), and finally passes through the clean water outlet (32) and then gathers and enters the flow channel (4), and flows back to the pool body (1); part of the fish feces and food residues in the filter screen cylinder (33) remain in the filter screen cylinder (33), and part is flushed into the sewage chamber (31), and can be discharged from the sewage pipe (14); 2) Water oxygenation: The water in the pool (1) is pumped by the oxygenation water pump (10) and then passed into the outer casing (19); at this time, the water flows through the oxygenation water pipe (24) of the water-gas mixing head (20). Since the inlet of the oxygenation water pipe (24) is large and the outlet is small, and the middle part is the smallest, the water flow speed is rapidly accelerated, and the internal pressure is reduced. The atmosphere presses the air flow into the air inlet pipe (23) and into the oxygenation water pipe (24). The fast-flowing water is mixed with the air, and the gas is entrained and sent out in the form of small bubbles, which are ejected through the water gas nozzle (28) to oxygenate the water body; at the same time, the water flows toward the inlet of the filter and drainage pipe (12), blowing impurities in the water toward the filter and drainage pipe (12).

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